"I was in a boat on a lake, shooting subjects such as a heron going in to catch a fish, or the sea eagle or kite in the air, and there was no room for error at all," he says. "We had heavy rain, and visibility was poor – I had situations where you'd say it was almost impossible to track a bird. It's easy enough for a camera to do that in a bright sky, but if you have a dark bird against a background of trees, it's hard for the autofocus to track. But not with this camera – it stays on the animal all the time. For example, from a sequence of 50 images in a row of a sea eagle in flight, I was thrilled to see that every single image I shot was in focus."
Ulla also turned to the animal-tracking AF when photographing swans. "The camera didn't lose focus if there was something in the foreground, even shooting through dense reeds," she says. "It just kept on tracking the focus, which I thought was amazing. You can really rely on it."